General Information

Event name: PL-12-002
Country: POLAND
Nature of the harmful event:
High Phyto concentration
Event directly affected:
Planktonic life
Toxicity detected: Yes (Approximate range: STX 9.0 g/L; GTX2/3 1.5 g/L)
Associated syndrome:
Unexplained toxicity:
Species implicated in toxin transmission (transvector):
Report the outcome of a monitoring programme: No
Event occurred before in this location: Yes (few years ago)
Individuals to contact: Kobos, Justyna , Mazur-Marzec, Hanna

Location & Date

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Location: Latitude: 54.626944, Longitude: 18.508056
General location information: Puck Bay, Southern Baltic
HAB Area code(s): PL-01
Additional location information: at the end of August strong water bioluminescence was observed
Bloom event dates (yyyy/mm/dd): Event Date:2012-08-30
Start: 2012-08-24, End: 2012-09-04
Quarantine levels dates (yyyy/mm/dd):
Additional date-related information:


Causative organism known: Yes
Causative Species/Genus: Alexandrium ostenfeldii (850000 cells/L)
biomass 18,445 g/L
Co-Ocurring Species/Genus:
Chlorophyll concentration, if known: 4.29 µg/l
Additional bloom information:
Event-related bibliography: Błaszczyk A., Kobos J., Hohlfeld N., Toruńska A., Hebel A., Mazur-Marzec H., First report of saxitoxin production by Alexandrium ostenfeldii in Puck Bay (Southern Baltic Sea), 32nd International Conference of Polish Phycologists Do termophilic species invasion treaten us? Adam Mickiewicz University, Konin-Mikorzyn 20-23.05.2013 (oral presentation)

Environmental Conditions

Weather: Turbidity (NTU): Wind direction:
Stratified water: Oxygen content (nL/L): Wind velocity:
Temperature (°C): 19.1 Oxygen saturation %: Current Direction:
Sechhi disk (m): Salinity: 7 Current Velocity:
Nutrient information:
Temperature Range During Event: Max: °C, Min: °C
Salinity Range During Event:
Bloom location in the water column: Whole column
In situ
Growth Comments
Additional Environmental information:

Toxin Assay Information

Species containing the toxin Toxin type Toxin details Max. concentration Assay type
Alexandrium ostenfeldii Saxitoxins 10.5 g/L LC-MS
Kit used: Type of kit used:
Additional information:
Economic losses:
Management decision:
Additional harmful effect information:
Created at 01:21 on 29 Apr 2014
Updated at 02:30 on 11 Mar 2021